kaniko leaks Azure access token to attacker-controlled registry host

critical severity · published 2026-11-02

An attacker can trick kaniko into sending a Microsoft Entra ID (Azure AD) access token for Azure Resource Manager to a registry they control, by using a hostname that merely contains a real Azure registry suffix like .azurecr.io. With that token the attacker gains Azure access tied to the credentials kaniko used.

Fixed in: 1.25.20

CVE: CVE-2026-105769

Source: NVD

Am I affected?

You are affected if the installed version is older than 1.25.20. Check the version you have and update to 1.25.20 or later. The fixed version is verified against a vendor or advisory source.

Get the fix

FixLane has a reviewed fix procedure for this incident: a read-only check first, then the fix. Ask the Telegram bot, or connect an AI agent to the FixLane MCP server and call get_fix_prompt with incident id 668 and your operating system.